21257536

素因数分解:

$2^6\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:287

約数の個数: 56

約数和(自身を含む): 44476416

約数和(自身を除く): 23218880

約数列:

[1, 2, 4, 8, 16, 32, 37, 47, 64, 74, 94, 148, 188, 191, 296, 376, 382, 592, 752, 764, 1184, 1504, 1528, 1739, 2368, 3008, 3056, 3478, 6112, 6956, 7067, 8977, 12224, 13912, 14134, 17954, 27824, 28268, 35908, 55648, 56536, 71816, 111296, 113072, 143632, 226144, 287264, 332149, 452288, 574528, 664298, 1328596, 2657192, 5314384, 10628768, 21257536]

約数ペア:

[(1, 21257536), (2, 10628768), (4, 5314384), (8, 2657192), (16, 1328596), (32, 664298), (37, 574528), (47, 452288), (64, 332149), (74, 287264), (94, 226144), (148, 143632), (188, 113072), (191, 111296), (296, 71816), (376, 56536), (382, 55648), (592, 35908), (752, 28268), (764, 27824), (1184, 17954), (1504, 14134), (1528, 13912), (1739, 12224), (2368, 8977), (3008, 7067), (3056, 6956), (3478, 6112)]